Battle of Guadalcanal order of battle

This is the order of battle for the Guadalcanal Campaign, called Operation Watchtower, the first major Allied offensive in the Pacific Theater of Operations in World War II. The campaign lasted from the initial American landings on 7 August 1942 until the final Japanese evacuation on 9 February 1943, a period of six months, far longer than was expected by Allied planners.

Maps of Guadalcanal Island; the great majority of the fighting took place in a small sliver of land along the north central coast.

The 7 August landings on Guadalcanal itself and Tulagi across Savo Sound (the site of a Japanese seaplane base) were carried out by US Marines under the command of Major General Alexander A. Vandegrift. These were followed by units of the Naval Construction Battalions, known as CB's or Seabees.

Forces of the US Army began arriving to relieve the exhausted Marines on 13 October. On 8 December Vandegrift was replaced by Major General Alexander M. Patch, US Army, who was named commander of the XIV Army Corps on 2 January 1943. Patch declared the island secure on 9 February.

The high command of the Imperial Japanese Army did not take initially the Allied effort on Guadalcanal seriously and committed units piecemeal throughout the fall of 1942. Over the course of the campaign, the Japanese subjected two entire infantry divisions to massive attrition on the island.

1st Marine Division patch

The 1st Marine Division's struggle to take Guadalcanal achieved legendary status: the heat and mud, the malaria and dysentery, the giant tropical insects and the fanatical, often suicidal, resistance of the Japanese combined to create an immense amount of sheer suffering. Today, the unit's insignia features the word "Guadalcanal" superimposed on a large red numeral 1. Three future commandants of the Marine Corps fought on "The Canal": Alexander A. Vandegrift, Clifton B. Cates and Lemuel C. Shepherd. Vandegrift was awarded the Medal of Honor the following year in recognition of his courage and extraordinary leadership during the Corps's four-month struggle.

Marines landing unopposed on the north shore of Guadalcanal 7 August 1942.

Why does the mere mention of the southwest Pacific cause the men who fought there to shudder? Why does so genteel an author as Herman Wouk, whipped into a white-lipped rage at the mere thought of Guadalcanal, write that it "was and remains 'that fucking island'"? Why was combat there considered — correctly – worse than Stalingrad?

— William Manchester, Goodbye, Darkness: A Memoir of the Pacific War (1980), p. 79

In addition to the action on the ground, the United States Navy and Imperial Japanese Navy fought several vicious and costly surface engagements at night in the waters of Savo Sound. Two nights after the initial landings, the US Navy experienced the worst open-water defeat in its history at the Battle of Savo Island. By the time the Japanese had given up on Guadalcanal, they had lost 2 battleships, 2 heavy cruisers and 7 destroyers; Allied losses included 5 heavy cruisers (one of which was Australian), 2 light cruisers and a destroyer. Each side had an admiral killed in combat. After the war, the area was renamed Ironbottom Sound in reference to the number of ships sunk there.

Further information: Guadalcanal naval order of battle

United States

Theater commanders for Operation Watchtower

Adm. Chester W. Nimitz

Vice Adm. Robert L. Ghormley (thru 18 Oct)

Vice Adm. William F. Halsey (after 18 Oct)

Operational commanders

Vice Adm. Frank Jack Fletcher

Rear Adm. R. Kelly Turner

Theater command

The roles of Commander in Chief, Pacific Ocean Areas (CINCPOA) and Commander in Chief, U.S. Pacific Fleet (CINCPAC), were both exercised by Admiral Chester W. Nimitz from his headquarters at Pearl Harbor, Hawaii.

Since the Solomons lie in the Southern Pacific, the landings of 7 August 1942 on Guadalcanal were the responsibility of the South Pacific Fleet, led by Vice Admiral Robert L. Ghormley from his headquarters at Nouméa, New Caledonia.^[1] Adm. Ghormley's pessimism, inadequate staff work and unwillingness to visit the front led Adm. Nimitz to replace him with the much more aggressive and hands-on Vice Admiral William F. Halsey on 18 October 1942.^[2]

Operational command

Operational command of the invasion was assigned to Vice Admiral Frank Jack Fletcher. He also had direct command of the covering force, designated Task Force 61, where he flew his flag aboard fleet carrier Saratoga. The amphibious forces, Task Force 62, were led by Rear Admiral Richmond Kelly Turner aboard attack transport McCawley.

Bitter disputes between Vice Adm. Fletcher and Rear Adm. Turner arose during both the planning and execution of the invasion. At issue was how long Fletcher's aircraft carriers would stay in the vicinity of Guadalcanal to provide air cover for Turner's support vessels in Savo Sound. The matter came to a head on D+1 (8 August), after two days of assaults by bombers from the Japanese base at Rabaul. These attacks convinced Fletcher that his crucial aircraft carriers could not be risked in the waters of the Solomons any longer and his task force departed the area that evening. Unsettled by the removal of air cover and rattled on the morning of D+2 by the discovery that his cruiser screen had been decimated at the Battle of Savo Island, Turner ordered his vulnerable, and still half-full, cargo ships back to Nouméa around sundown 9 August. The Marine Corps forces ashore were thus left without air cover or the planned level of food and ammunition. This suboptimal outcome was at least partially attributable to the decision to vest both overall mission command and carrier task force command in the same individual (Vice Adm. Fletcher).

Marine forces

Maj. Gen. Alexander A. Vandegrift on Guadalcanal

Clifton B. Cates (center) and his battalion commanders on Guadalcanal

Merritt A. "Red Mike" Edson as a brigadier general

Col. Lewis B. "Chesty" Puller

Pedro del Valle as a major general

The D-Day (7 August) landings on Guadalcanal were carried out by the 1st and 3rd Battalions/5th Marines at 0910 hours, followed by the 1st Marines at 0930. Landings on the Florida Islands across Savo Sound were carried out earlier that morning by the 2nd Battalion/5th Marines, the 1st Parachute Battalion, and the 1st Marine Raider Battalion.^[3] The 7th Marines and 1st Battalion/11th Marines arrived 18 September. The division began withdrawal from the island 12 December.

1st Marine Division
Major General Alexander A. Vandegrift^[a]
Asst. Div. Cmdr.: Brigadier General William H. Rupertus^[b]

Division staff

Chief of staff: Col. William C. James (to 24 Sep)^[c]; Col. Gerald C. Thomas^[d]

Asst. CoS for Personnel (D-1): Col. Robert C. Kilmartin Jr.

Asst. CoS for Intelligence (D-2): Lt. Col. Frank B. Goettge (to 12 Aug)^[e]; Lt. Col. Edmund J. Buckley

Asst. CoS for Operations (D-3): Lt. Col. Gerald C. Thomas (to 24 Sep); Lt. Col. Merrill B. Twining

Asst. CoS for Logistics (D-4): Lt. Col. Randolph M. Pate

1st Marine Regiment

Colonel Clifton B. Cates^[f]

Exec. ofc.: Lt. Col. Julian N. Frisbie (to 23 Sep); Lt. Col. Edwin A. Pollock

1st Battalion: Lt. Col. Leonard B. Cresswell

2nd Battalion: Lt. Col. Edwin A. Pollock (to 23 Sep); Lt. Col. William W. Stickney

3rd Battalion: Lt. Col. William N. McKelvy Jr.

5th Marine Regiment

Colonel Leroy P. Hunt (to 21 Sep)^[g][h] ; Colonel Merritt A. Edson^[i]

Exec. ofc.: Col. William J. Whaling (to 25 Sep); Lt. Col. Walker A. Reaves (to 12 Oct); Lt. Col. William S. Fellers

1st Battalion: Lt. Col. William E. Maxwell (to 30 Aug)^[j]; Maj. Donald W. Fuller (to 13 Oct); Maj. William K. Enright

2nd Battalion: Lt. Col. Harold E. Rosecrans (to 11 Sep); Capt. Joseph J. Dudkowski (1-17, 25-30 Sep); Lt. Col. Walker A. Reaves (18-24 Sep); Maj. David S. McDougal (1-8 Oct); Maj. William J. Piper (8-11 Oct); Maj. Lewis W. Walt

3rd Battalion: Lt. Col. Frederick C. Biebush (to 22 Sep); Maj. Robert O. Bowen

7th Marine Regiment

Colonel James W. Webb (to 20 Sep)^[k]; Colonel Amor L. Sims

Exec. ofc.: Col. Amor L. Sims (to 20 Sep); Lt. Col. Julian N. Frisbie

1st Battalion: Lt. Col. Lewis B. "Chesty" Puller^[l]

2nd Battalion: Lt. Col. Herman H. "Hard-Headed" Hanneken^[m]

3rd Battalion: Lt. Col. Edwin J. Farrell (to 24 Sep); Lt. Col. William R. Williams

11th Marine Regiment (Artillery)

Colonel Pedro del Valle^[n]

Exec. ofc.: Lt. Col. John A. Bemis (to 17 Oct); Lt. Col. Robert B. Luckey (to 28 Nov)^[o]; Lt. Col. Thomas B. Hughes

1st Battalion: Lt. Col. Joseph R. Knowlan (to 19 Oct); Lt. Col. Manley L. Curry (to 28 Nov); Lt. Col. Donovan D. Sult (to 2 Dec)

2nd Battalion: Lt. Col. Edward G. Hagen (to 14 Sep); Maj. Forest C. Thompson

3rd Battalion: Lt. Col. James J. Keating

4th Battalion: Lt. Col. Melvin E. Fuller (to 28 Oct; from 7 Dec); Maj. Carl G.F. Korn (28-31 Oct); Capt. Albert H. Potter (to 6 Dec)

5th Battalion: Lt. Col. E. Hayden Price (to 18 Oct); Maj. Noah P. Wood, Jr.

Other Marine units

3rd Defense Battalion (landed 7 Aug): Col. Robert H. Pepper

Executive officer: Lt. Col. Harold C. Roberts

Operations officer: Maj. Samuel G. Taxis

1st Parachute Battalion: Maj. Charles A. Miller (to 18 Sep); Capt. Harry Torgerson (19-26 Sep); Maj. Robert H. Williams (from 27 Sep)

1st Raider Battalion: Col. Merritt A. Edson (to 21 Sep); Lt. Col. Samuel B. Griffith (22-27 Sep)

1st Amphibian Tractor Battalion: Lt. Col. Walter W. Barr

1st Aviation Engineer Battalion: Maj. Thomas F. Riley

1st Pioneer Battalion: Maj. James G. Frazer (to 25 Oct); Maj. Henry H. Crockett

1st Medical Battalion: Cmdr. Don S. Knowlton, USN

1st Special Weapons Battalion: Maj. Robert B. Luckey (to 6 Oct); Maj. Richard W. Wallace

1st Tank Battalion: Maj. Harvey S. Walseth

Brig. Gen. Alphonse DeCarre

Leo D. Hermle as a major general

A Marine corporal with two Guadalcanal police officers

2nd Marine Division
Brigadier General Alphonse DeCarre

The 2nd Marines reinforced by the 3rd Battalion/10th Marines were part of the initial 7 August landings. The reinforced 8th Marines landed on 2 November and the reinforced 6th Marines on 4 January 1943.

Division staff

Asst. to commanding general: Col. Leo D. Hermle^[p]

Chief of staff: Col. George F. Stockes

Asst. CoS for Personnel (D-1): Maj. Lawrence C. Hays Jr.

Asst. CoS for Intelligence (D-2): Maj. Thomas J. Colley

Asst. CoS for Operations (D-3): Lt. Col. John H. Coffman

Asst. CoS for Logistics (D-4): Maj. George N. Carroll

Division special troops: Col. Maurice G. Holmes

2nd Marine Regiment

Colonel John M. Arthur

Exec. ofc.: Lt. Col. William S. Fellers (to 9 Oct); Lt. Col. Cornelius P. Van Ness

1st Battalion: Lt. Col. Robert E. Hill (to 10 Nov); Maj. Wood B. Kyle^[q]

2nd Battalion: Maj. Orin K. Pressley

3rd Battalion: Maj. Robert G. Hunt

6th Marine Regiment

Colonel Gilder D. Jackson Jr.^[r]

Exec. ofc.: Lt. Col. Alfred A. Watters (to 15 Dec); Lt. Col. Lyman G. Miller

1st Battalion: Lt. Col. Russell Lloyd

2nd Battalion: Maj. Raymond L. Murray

3rd Battalion: Maj. William A. Kengla

8th Marine Regiment

Colonel Richard H. Jeschke

Exec. ofc.: Lt. Col. James P. Riseley

1st Battalion: Lt. Col. Miles S. Newton (from 15 Jan. to 15 Nov, 1942); Maj. Joseph B. McCaffery

2nd Battalion: Lt. Col. John H. Cook Jr.

3rd Battalion: Lt. Col. Augustus H. Fricke

10th Marine Regiment (Artillery)

Colonel Thomas E. Bourke

Exec. ofc.: Lt. Col. Ralph E. Forsyth

1st Battalion: Lt. Col. Presley M. Rixey

2nd Battalion: Maj. George R. E. Shell

3rd Battalion: Lt. Col. Manly L. Curry (to 18 Oct; from 28 Nov); Lt. Col. Donovan D. Sult (18 Oct-28 Nov)

4th Battalion: Lt. Col. Kenneth A. Jorgensen

Lt. Col. Evans F. Carlson

Other Marine units

2nd Amphibian Tractor Battalion: Maj. Henry C. Drewes

9th Defense Battalion (landed December 1942)

Commanding officer: Col. David R. Nimmer

Executive officer: Lt. Col. William J. Scheyer

Operations officer: Capt. William C. Givens

2nd Raider Battalion ("Carlson's Raiders"): Lt. Col. Evans F. Carlson

2nd Special Weapons Battalion: Lt. Col. Paul D. Sherman

2nd Tank Battalion: Maj. Alexander B. Swenceski

6th Naval Construction Battalion: Lt. Cmdr. Joseph L. Blundon, CEC^[4] (Started landing on 27 August)

3rd Battalion 18th Marines (started landing on 12 December)^[5]

Army forces

Americal Division

Alexander M. Patch as a lieutenant general

Major General Alexander M. Patch^[s]

Arrived in echelons beginning 13 October:

132nd Infantry Regiment (Illinois National Guard)

164th Infantry Regiment (North Dakota National Guard)

Landed 13 October:

182nd Infantry Regiment (Massachusetts National Guard)

Landed 12 November:

147th Infantry Regiment (Separate) (Ohio National Guard)

97th Field Artillery Battalion

214th Coast Artillery (United States)

244th Coast Artillery Regiment

221st Field Artillery Battalion

245th Field Artillery Battalion

246th Field Artillery Battalion

247th Field Artillery Battalion

57th Engineer Combat Battalion

25th Infantry Division

J. Lawton Collins as a full general

Major General J. Lawton Collins^[t]

Arrived in echelons beginning 17 December:

27th Infantry Regiment

35th Infantry Regiment

161st Infantry Regiment (Washington National Guard)

Battalion-level units:

8th Field Artillery Battalion

64th Field Artillery Battalion

89th Field Artillery Battalion

90th Field Artillery Battalion

65th Engineer Combat Battalion

Service Command, South Pacific Theater of Operations
Brigadier General Raymond E. S. Williamson

70th Coast Artillery

Engineer units

Supply units

Military Police units

Japanese

Lt. Gen. Harukichi Hyakutake

Maj. Gen. Kiyotake Kawaguchi was relieved of command and expelled from the island 23 October just as the Battle of Henderson Field was beginning

Seventeenth Army^[u]

Lieutenant General Harukichi Hyakutake^[v][6]

2nd Infantry (Sendai) Division
Lieutenant General Masao Maruyama

Landed between 5 September and 4 October:

4th Infantry Regiment

16th Infantry Regiment

29th Infantry Regiment

2nd Artillery Regiment

2nd Engineer Battalion

38th Infantry Division
Lieutenant General Tadayoshi Sano

The depleted 38th Division landed 5–15 November

228th Infantry Regiment

229th Infantry Regiment

230th Infantry Regiment

38th Mountain Gun Regiment

38th Engineer Battalion

35th Brigade
Major General Kiyotaki Kawaguchi^[w]

Landed 29 August–5 September; included a late-arriving battalion of the 28th Infantry Regiment.

124th Infantry Regiment

Kitao Battalion / Ichiki Detachment^[x]

4th Artillery Regiment

10th Mountain Gun Battalion

20th Mountain Gun Battalion

Other units

28th Infantry Regiment

Arrived 6 July to begin construction of an airstrip:

11th Construction Unit

13th Construction Unit

Notes

1. Awarded Congressional Medal of Honor 5 Feb 1943; made 18th Commandant of the Marine Corps 1 Jan 1944; promoted to four-star general 21 Mar 1945.
2. Commanded division on Peleliu.
3. Relieved by Vandegrift for poor performance
4. Commanded the division in Korea
5. Killed when a patrol he had organized encountered unexpected Japanese resistance and was essentially wiped out.
6. Commanded 4th Marine Division on Iwo Jima
7. Relieved by Vandegrift for poor performance; never held another combat command, but was promoted to major general and commanded the 2nd Marine Division after the war.
8. International News Service correspondent Richard Tregaskis, whose best-selling Guadalcanal Diary related his experiences during the first seven weeks of the campaign, was attached to this headquarters.
9. Later commanded Fleet Marine Force, Pacific
10. Relieved for perceived lack of aggressiveness.
11. Relieved by Vandegrift for poor performance.
12. Eventually became most-decorated man in history of Marine Corps.
13. Commanded 7th Marines on Peleliu.
14. Promoted to Brigadier General 9 Oct; commanded 1st Marine Division during Okinawa Campaign.
15. Commanded 15th Marines during Okinawa Campaign.
16. Later rose to regimental and assistant division command
17. Also commanded the battalion on Tarawa, Saipan and Tinian
18. Malaria acquired on Guadalcanal having rendered him unfit for further frontline duty, he received only stateside assignments afterward.
19. Later rose to army command during the liberation of Europe
20. Later rose to Corps command during the liberation of Europe and Army Chief of Staff during Korean War
21. A Japanese army was equivalent to a Euro-American corps.
22. Arrived on the island to take direct command 10 October.
23. Relieved 23 October and given rear-area command after repeated refusal to obey orders
24. Arrived 18–24 August.

References

1. Morison 1949, pp. 250-251
2. Morison 1948, p. 183
3. Stille, p. 40
4. Naval Heritage and History Command webpage, p. 6/84, Seabee Museum, Port Hueneme, CA
5. 18th Naval Construction Battalion, Naval Heritage and History Command webpage, p. 21/88, Seabee Museum, Port Hueneme, CA
6. Stille, p. 60

Bibliography

• Morison, Samuel Eliot (1949). Coral Sea, Midway and Submarine Actions, May 1942 – August 1942. History of United States Naval Operations in World War II. Vol. IV. Boston: Little, Brown and Co.
• Morison, Samuel Eliot (1948). The Struggle for Guadalcanal, August 1942 – February 1943. History of United States Naval Operations in World War II. Vol. V. Boston: Little, Brown and Co.
• Stille, Mark (2015). Guadalcanal, 1942–43: America's first victory on the road to Tokyo. Oxford: Osprey.